1.

Using the formula (a + b)2 = (a2 + 2ab + b2), evaluate (310)2.

Answer»

Given (310)2

We have (a + b)= (a+ 2ab + b2)(310)can be written as 300 + 10 So here a=300 and b=10

Using the formula,

(300 + 10)= (300+ 2 X 300 X 10 + 102)

On simplifying we get

(300 + 10)= (90000 + 6000 +100)

(310)= 96100



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